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Intravascular polarization-sensitive optical coherence tomography based on polarization mode delay.

Yan Li1, Sucbei Moon2, Yuchen Jiang1,2

  • 1Beckman Laser Institute, University of California, Irvine, Irvine, CA, 92617, USA.

Scientific Reports
|April 28, 2022
PubMed
Summary
This summary is machine-generated.

Intravascular polarization-sensitive optical coherence tomography (IV-PSOCT) can now be used with endoscopes to visualize tissue birefringence. This advancement allows for better evaluation of plaque mechanical stability in clinical settings.

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Area of Science:

  • Biomedical Optics
  • Medical Imaging
  • Optical Coherence Tomography

Background:

  • Intravascular polarization-sensitive optical coherence tomography (IV-PSOCT) assesses plaque mechanical stability via depth-resolved tissue birefringence.
  • Previous work established IV-PSOCT on a microscope platform.

Purpose of the Study:

  • To demonstrate the implementation of IV-PSOCT on an endoscope platform for clinical applications.
  • To adapt existing intravascular OCT systems for enhanced polarization-sensitive imaging.

Main Methods:

  • Modified a conventional intravascular OCT system by incorporating a 12-m polarization-maintaining fiber imaging probe.
  • Utilized two polarization modes to generate spatially separated OCT images for polarization detection channels (2.7 mm separation).

Main Results:

  • Successfully visualized birefringent properties in various tissue samples, including chicken tendon, chicken breast, and coronary artery.
  • Demonstrated the feasibility of integrating IV-PSOCT technology into an endoscope system.

Conclusions:

  • IV-PSOCT can be effectively implemented in an endoscope platform, expanding its clinical utility.
  • The adapted IV-PSOCT system successfully visualizes tissue birefringence, aiding in mechanical plaque stability assessment.